/Engine/Plugins/Runtime/nDisplay/Source/DisplayCluster/Public/Render/Projection/IDisplayClusterProjectionPolicy.h
Build preview mesh
virtual [UMeshComponent](API\Runtime\Engine\Components\UMeshComponent) * GetOrCreatePreviewMeshComponent ( [IDisplayClusterViewport](API\Plugins\DisplayCluster\Render\Viewport\IDisplayClusterViewport) * InViewport, bool & bOutIsRootActorComponent )